A two-page lesson from Posselt's Textile Journal (November 1908) on designing granite weaves for harness-loom work, which produce small, broken-up effects on the fabric face. It explains building granite weaves from satin foundations by adding risers to each foundation spot, and describes a plate of 15 granite weaves built on 8- to 16-harness satins, with a closing exercise. Page 2 begins a separate short piece on yarn strength, elasticity, twist and contraction by twist, criticizing old hand-testing methods.